All mechanical devices require routine maintenance. As a mechanical backflow prevention device protecting against contamination up to and including fluid category 4 fluids (contaminants which poses a significant health hazard) it is important to ensure, both those on site and the drinking water network, continue to be protected by regularly verifying the valve is functioning satisfactorily.
Test intervals will be set by the local water undertaker as a condition of consent. Whilst these may vary, they will be at least annually.
Please note:
Only RPZ valves installed and tested in accordance with the RPZ AIM will be considered as providing backflow protection.
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